funyunz

i noticed oil on my driveway, i took it to the mechanic and he said there were no leaks. but today, once i got home i saw this leak, it only happens while i drive and a little bit after i stop but it doesn't leak overnight. oh the car is a 1999 lexus rx300.

appreciated if anyone could help.

salimshah

From the color it seems like an oil leak (seepage to be more precise). Most likely it is from a gasket a bit higher up. Take it back to the same mechanic or a different one to have it traced. At times living with a small seepage is better than getting it fixed, but still have it traced.

Salim

funyunz

hey thanks for the reply, i'll definitely get it traced.

but do you know what part that thing with the oil seep? is that the bottom of the engine block?

Lexmex

It's coming from the rear main seal on the engine side (as opposed to the transmission side) shown below.

One of the things that can be used is something like Lubro Moly Motor Oil Saver (which is available at Napa), but there are also products from Bar's (available at most auto parts stores) that can be added to oil to help seal up such leaks. Auto-RX is another product to try should one of the first two not do the trick.

gazi001

I used auto-RX and it works for stop my rear main seal. Try it.

funyunz

thank you guys, i'll try those products out tomorrow and see if it'll do the trick. will post back then.

funyunz

just an update, i tried using lubro motor oil saver and it did not work. i am going to try auto rx, but auto stores don't carry this? anyone know where to get this?

code58

Google it. They probably have a "where to buy" link to click on.

gazi001

Here is the link for Auto-RX: http://www.auto-rx.com/cart/order.htm

funyunz

just to update: i've tried both products and it didn't solve the leak. it's a small leak so i'm just living with it now. but others have had success with autorx though.

Lexmex

The other thing you could try is going to a heavier oil.

funyunz

what weight of oil do you suggest?

Lexmex

A w40, 0W40 or 5W40. 10W40 I have run, but the vehicle starts to bog down on that stuff.

code58

Funyunz- Do you still have the Auto RX in there ? If so, give it time to work. If you saw how rock hard that seal gets, you'd understand that it won't happen overnight- it's terrific stuff but it doesn't have a magic wand.
I would give it a couple oil changes with the Auto RX before I went to heavier oil to try and solve the problem.

funyunz

i was going to change the oil at 2000 miles as suggested by autorx, i figured by that time if it doesn't work. its not going to. so i'd go with a heavier oil then. do you suggest using another auto rx treatment after that?